From 2dd4b26264d48f10e802cc9f2d75542be5a3c7fa Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Tue, 11 Dec 2007 16:54:15 -0500 Subject: [PATCH] libertas: convert RF_CHANNEL to a direct command Signed-off-by: Dan Williams Signed-off-by: David Woodhouse Signed-off-by: John W. Linville --- drivers/net/wireless/libertas/assoc.c | 23 ++++++----- drivers/net/wireless/libertas/cmd.c | 71 ++++++++++++++++++++++++--------- drivers/net/wireless/libertas/cmd.h | 3 ++ drivers/net/wireless/libertas/cmdresp.c | 25 ------------ drivers/net/wireless/libertas/hostcmd.h | 10 +++-- 5 files changed, 75 insertions(+), 57 deletions(-) diff --git a/drivers/net/wireless/libertas/assoc.c b/drivers/net/wireless/libertas/assoc.c index 63bd692..bd9cfe1 100644 --- a/drivers/net/wireless/libertas/assoc.c +++ b/drivers/net/wireless/libertas/assoc.c @@ -9,6 +9,7 @@ #include "decl.h" #include "hostcmd.h" #include "host.h" +#include "cmd.h" static const u8 bssid_any[ETH_ALEN] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF }; @@ -165,11 +166,14 @@ done: static int update_channel(struct lbs_private *priv) { int ret; + /* the channel in f/w could be out of sync, get the current channel */ lbs_deb_enter(LBS_DEB_ASSOC); - ret = lbs_prepare_and_send_command(priv, CMD_802_11_RF_CHANNEL, - CMD_OPT_802_11_RF_CHANNEL_GET, - CMD_OPTION_WAITFORRSP, 0, NULL); + + ret = lbs_get_channel(priv); + if (ret > 0) + priv->curbssparams.channel = (u8) ret; + lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret); return ret; } @@ -203,17 +207,16 @@ static int assoc_helper_channel(struct lbs_private *priv, lbs_deb_assoc("ASSOC: channel: %d -> %d\n", priv->curbssparams.channel, assoc_req->channel); - ret = lbs_prepare_and_send_command(priv, CMD_802_11_RF_CHANNEL, - CMD_OPT_802_11_RF_CHANNEL_SET, - CMD_OPTION_WAITFORRSP, 0, &assoc_req->channel); - if (ret < 0) { + ret = lbs_set_channel(priv, assoc_req->channel); + if (ret < 0) lbs_deb_assoc("ASSOC: channel: error setting channel."); - } + /* FIXME: shouldn't need to grab the channel _again_ after setting + * it since the firmware is supposed to return the new channel, but + * whatever... */ ret = update_channel(priv); - if (ret < 0) { + if (ret < 0) lbs_deb_assoc("ASSOC: channel: error getting channel."); - } if (assoc_req->channel != priv->curbssparams.channel) { lbs_deb_assoc("ASSOC: channel: failed to update channel to %d", diff --git a/drivers/net/wireless/libertas/cmd.c b/drivers/net/wireless/libertas/cmd.c index eff7879..32f9f88 100644 --- a/drivers/net/wireless/libertas/cmd.c +++ b/drivers/net/wireless/libertas/cmd.c @@ -810,25 +810,65 @@ static int lbs_cmd_mac_multicast_adr(struct lbs_private *priv, return 0; } -static int lbs_cmd_802_11_rf_channel(struct lbs_private *priv, - struct cmd_ds_command *cmd, - int option, void *pdata_buf) +/** + * @brief Get the radio channel + * + * @param priv A pointer to struct lbs_private structure + * + * @return The channel on success, error on failure + */ +int lbs_get_channel(struct lbs_private *priv) { - struct cmd_ds_802_11_rf_channel *rfchan = &cmd->params.rfchannel; + struct cmd_ds_802_11_rf_channel cmd; + int ret = 0; lbs_deb_enter(LBS_DEB_CMD); - cmd->command = cpu_to_le16(CMD_802_11_RF_CHANNEL); - cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_rf_channel) + - S_DS_GEN); - if (option == CMD_OPT_802_11_RF_CHANNEL_SET) { - rfchan->currentchannel = cpu_to_le16(*((u16 *) pdata_buf)); - } + cmd.hdr.size = cpu_to_le16(sizeof(cmd)); + cmd.action = cpu_to_le16(CMD_OPT_802_11_RF_CHANNEL_GET); - rfchan->action = cpu_to_le16(option); + ret = lbs_cmd_with_response(priv, CMD_802_11_RF_CHANNEL, cmd); + if (ret) + goto out; - lbs_deb_leave(LBS_DEB_CMD); - return 0; + lbs_deb_cmd("current radio channel is %d\n", cmd.channel); + ret = (int) cmd.channel; + +out: + lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret); + return ret; +} + +/** + * @brief Set the radio channel + * + * @param priv A pointer to struct lbs_private structure + * @param channel The desired channel, or 0 to clear a locked channel + * + * @return 0 on success, error on failure + */ +int lbs_set_channel(struct lbs_private *priv, u8 channel) +{ + struct cmd_ds_802_11_rf_channel cmd; + u8 old_channel = priv->curbssparams.channel; + int ret = 0; + + lbs_deb_enter(LBS_DEB_CMD); + + cmd.hdr.size = cpu_to_le16(sizeof(cmd)); + cmd.action = cpu_to_le16(CMD_OPT_802_11_RF_CHANNEL_SET); + cmd.channel = cpu_to_le16(channel); + + ret = lbs_cmd_with_response(priv, CMD_802_11_RF_CHANNEL, cmd); + if (ret) + goto out; + + priv->curbssparams.channel = cmd.channel; + lbs_deb_cmd("channel switch from %d to %d\n", old_channel, cmd.channel); + +out: + lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret); + return ret; } static int lbs_cmd_802_11_rssi(struct lbs_private *priv, @@ -1390,11 +1430,6 @@ int lbs_prepare_and_send_command(struct lbs_private *priv, ret = lbs_cmd_reg_access(priv, cmdptr, cmd_action, pdata_buf); break; - case CMD_802_11_RF_CHANNEL: - ret = lbs_cmd_802_11_rf_channel(priv, cmdptr, - cmd_action, pdata_buf); - break; - case CMD_802_11_RF_TX_POWER: ret = lbs_cmd_802_11_rf_tx_power(priv, cmdptr, cmd_action, pdata_buf); diff --git a/drivers/net/wireless/libertas/cmd.h b/drivers/net/wireless/libertas/cmd.h index 4bd6f56..5b02d73 100644 --- a/drivers/net/wireless/libertas/cmd.h +++ b/drivers/net/wireless/libertas/cmd.h @@ -30,4 +30,7 @@ int lbs_mesh_access(struct lbs_private *priv, uint16_t cmd_action, int lbs_get_data_rate(struct lbs_private *priv); int lbs_set_data_rate(struct lbs_private *priv, u8 rate); +int lbs_get_channel(struct lbs_private *priv); +int lbs_set_channel(struct lbs_private *priv, u8 channel); + #endif /* _LBS_CMD_H */ diff --git a/drivers/net/wireless/libertas/cmdresp.c b/drivers/net/wireless/libertas/cmdresp.c index 797c943..bf9941e 100644 --- a/drivers/net/wireless/libertas/cmdresp.c +++ b/drivers/net/wireless/libertas/cmdresp.c @@ -325,28 +325,6 @@ static int lbs_ret_802_11_rate_adapt_rateset(struct lbs_private *priv, return 0; } -static int lbs_ret_802_11_rf_channel(struct lbs_private *priv, - struct cmd_ds_command *resp) -{ - struct cmd_ds_802_11_rf_channel *rfchannel = &resp->params.rfchannel; - u16 action = le16_to_cpu(rfchannel->action); - u16 newchannel = le16_to_cpu(rfchannel->currentchannel); - - lbs_deb_enter(LBS_DEB_CMD); - - if (action == CMD_OPT_802_11_RF_CHANNEL_GET - && priv->curbssparams.channel != newchannel) { - lbs_deb_cmd("channel switch from %d to %d\n", - priv->curbssparams.channel, newchannel); - - /* Update the channel again */ - priv->curbssparams.channel = newchannel; - } - - lbs_deb_enter(LBS_DEB_CMD); - return 0; -} - static int lbs_ret_802_11_rssi(struct lbs_private *priv, struct cmd_ds_command *resp) { @@ -548,9 +526,6 @@ static inline int handle_cmd_response(struct lbs_private *priv, case CMD_RET(CMD_802_11_RATE_ADAPT_RATESET): ret = lbs_ret_802_11_rate_adapt_rateset(priv, resp); break; - case CMD_RET(CMD_802_11_RF_CHANNEL): - ret = lbs_ret_802_11_rf_channel(priv, resp); - break; case CMD_RET(CMD_802_11_RSSI): ret = lbs_ret_802_11_rssi(priv, resp); diff --git a/drivers/net/wireless/libertas/hostcmd.h b/drivers/net/wireless/libertas/hostcmd.h index d51010c..7acb651 100644 --- a/drivers/net/wireless/libertas/hostcmd.h +++ b/drivers/net/wireless/libertas/hostcmd.h @@ -386,11 +386,13 @@ struct cmd_ds_802_11_inactivity_timeout { }; struct cmd_ds_802_11_rf_channel { + struct cmd_header hdr; + __le16 action; - __le16 currentchannel; - __le16 rftype; - __le16 reserved; - u8 channellist[32]; + __le16 channel; + __le16 rftype; /* unused */ + __le16 reserved; /* unused */ + u8 channellist[32]; /* unused */ }; struct cmd_ds_802_11_rssi { -- 2.7.4